Complete battery specifications for your 2003 Lexus RX.
| Trim | Engine | Group Size | Cold Cranking Amps | Reserve Capacity | Terminal |
|---|---|---|---|---|---|
| Lariat | 2.0L I4 | 25 | 538 CCA | 90 min | Dual Terminal |
| Platinum | 2.0L I4 | 24 | 518 CCA | 88 min | Side Post |
| SE | 5.0L V8 | 24 | 845 CCA | 132 min | Dual Terminal |
| SEL | 5.0L V8 | 35 | 745 CCA | 117 min | Top Post |
| Denali | 5.0L V8 | 51 | 711 CCA | 108 min | Top Post |
| Sport | 5.0L V8 | 35 | 809 CCA | 134 min | Top Post |
| Limited | 5.0L V8 | 24 | 781 CCA | 136 min | Top Post |
| Base | 3.6L V6 | 35 | 667 CCA | 110 min | Dual Terminal |
| Sport | 3.6L V6 | 47 | 733 CCA | 114 min | Top Post |
| King Ranch | 3.6L V6 | 47 | 696 CCA | 114 min | Side Post |
| Premium | 3.6L V6 | 51 | 658 CCA | 117 min | Dual Terminal |
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